CN1966748A - Process for preparing foam magnesium by direct foaming of melt mass - Google Patents
Process for preparing foam magnesium by direct foaming of melt mass Download PDFInfo
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- CN1966748A CN1966748A CN 200510047728 CN200510047728A CN1966748A CN 1966748 A CN1966748 A CN 1966748A CN 200510047728 CN200510047728 CN 200510047728 CN 200510047728 A CN200510047728 A CN 200510047728A CN 1966748 A CN1966748 A CN 1966748A
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- Prior art keywords
- magnesium
- foaming
- foam
- alloy
- melt
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- 239000006260 foam Substances 0.000 title claims abstract description 45
- 238000005187 foaming Methods 0.000 title claims abstract description 41
- 239000011777 magnesium Substances 0.000 title claims abstract description 37
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title description 6
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 17
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 15
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 17
- 239000001095 magnesium carbonate Substances 0.000 claims description 17
- 229960001708 magnesium carbonate Drugs 0.000 claims description 17
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 17
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 17
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 9
- 229910000882 Ca alloy Inorganic materials 0.000 claims description 7
- -1 magnesium-aluminium-calcium Chemical compound 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 229910001051 Magnalium Inorganic materials 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 2
- 238000009775 high-speed stirring Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 9
- 238000009776 industrial production Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 239000008204 material by function Substances 0.000 abstract description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000012467 final product Substances 0.000 abstract 1
- 239000004088 foaming agent Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- 238000003913 materials processing Methods 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000006261 foam material Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000007769 metal material Substances 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to the field of metals, functional materials and materials processing, especially relates a method for preparing magnesium foam with melt directly, contains the steps of: melting of the material, adding foaming agent, stirring, foaming, cutting and shaping. The invention contains the following steps: preparing Mg alloy according to a proper ratio, heating to 700-730DEG C for melting, adding 5-30% carborundum particles, cooling to 550DEG C-650DEG C, adding 2-20% magnesia carbonatada powder, stirring at a high speed for 1-10min, expanding foam at 550DEG C-650DEG C, discharging, cooling, and cast to obtain the final product. The invention has stable technological conditions, accuracy operational control. The foam Mg product has homologous antilinear. The invention can produce foam Mg product with different densities and antilinear. The invention has low cost and simple process, and is fit for large-scaled industrial production.
Description
Technical field
The invention belongs to metallic substance and functional materials and material processing field, particularly a kind of method of preparing foam magnesium by direct foaming of melt mass.
Background technology
Foam materials is that matrix includes leachy a kind of type material.Characteristics such as it has that density is little, specific tenacity is big, easily processing, heat-resisting, sound insulation and good heat-insulation effect can be widely used in building, boats and ships, aviation, car industry.In recent years, in order to satisfy industrial production and scientific technological advance needs, people are the foam metal material of development with property actively, but main direction is the foam aluminium alloy material, appears in the newspapers few to the institute of foam aluminum alloy material.This is because inflammable, perishable, the complex process of magnesium alloy etc.At present, the method for preparing foamed metal commonly used has following several:
1, powder metallurgic method: it is that whipping agent is joined in the metal-powder, through forming and sintering, whipping agent is decomposed, and evaporates or dissolves and make, and adopts this method to be difficult to obtain porosity and is higher than 60% foam materials.This method only is suitable for some findings of casting processing because cost is higher, is not suitable for large-scale commercial production.
2, cover the metal method, claim strike again, it is to be skeleton with the polyurethane foam material, carries out electrolytic deposition, adds the organic foam material of heat abstraction then and makes.This foam material costliness, technology are complicated, use limited.
3, seepage flow casting: it is to be deposited in together with controlled-size solid particle (as dissolved salt, glass, pottery etc.), then, melt metal liquid is poured in the slit of solid particulate, solid particulate is removed after the condensation again, has just obtained foam materials.The homogeneity in the foam materials aperture that this method is produced can be accomplished, but porosity can be very not high.
4, direct foaming: promptly directly in molten metal, add TiH
2, ZrH
2, and CaH
2Deng whipping agent, make it and molten metal uniform mixing, decomposes goes out gas, and the cooling back forms the foamed metal material.
The foam magnesium material compare with foamed aluminium material have better damping and amortization, anti-electro permanent magnetic, have lightweight that present other materials institute can not have simultaneously, noise elimination, stagnant shake, electromagnetic shielding and function such as anti-aging.Owing to have above-mentioned good performance, the foam magnesium material can be used to make sourdine, vibroshock, interchanger, solar collector, support of the catalyst, electro-magnetic shielding cover and makes metallic material components in light weight, that intensity is high etc., provides possibility for solving many great technical barriers.For example, utilize foamed metal material good sound absorption characteristic can solve the automobile of long-term puzzlement environment, the exhaust noise silencing problem of motorcycle engine, can be used as the sandwich material of aircraft structure, the sound insulation wallboard of motorway etc.At present, the method that can prepare foam magnesium has only powder metallurgic method and seepage flow casting, utilizes the direct foaming of melt mass legal system to be equipped with foam magnesium and yet there are no report, and the characteristics of direct foaming of melt mass method are that technology is simple, production cost is low, are suitable for fairly large industrial production.
Summary of the invention
The object of the present invention is to provide the method for the preparing foam magnesium by direct foaming of melt mass that a kind of technology is simple, production cost is low, respond well.
The object of the present invention is achieved like this:
A kind of method of preparing foam magnesium by direct foaming of melt mass comprises the raw material fusing, adds processing steps such as whipping agent stirring, foaming, excision forming;
1, produces a kind of magnesium alloy (as magnesium-aluminium-calcium alloy): by mass percentage, be to produce magnalium at 80～91%: 20～9%, add 1～5% the calcium metal that accounts for the magnalium quality then, make magnesium alloy with magnesium, aluminum ratio.
2, above-mentioned magnesium alloy is heated under 700～730 ℃ of temperature melts, add 5～30% (preferable content is 5～20%) the silicon carbide tackifier that account for the magnesium alloy quality, to increase melt viscosity; Reduce to 550～650 ℃ temperature then, add the magnesiumcarbonate powder of 2～20% (preferable content is 2～10%) that account for magnesium alloy and silicon carbide total mass again, and carry out high-speed stirring.The present invention can be by control magnesiumcarbonate powder granularity and add-on and the churning time aperture of coming control foam magnesium, the granularity of magnesiumcarbonate powder is 20～200 orders; Churning time is 1～10 minute, and stirring velocity is 1000～2000 rev/mins.
3, the foaming of the melt impouring after will stirring groove, and send into foaming in the foaming furnace, blowing temperature is 550～650 ℃, the magnesiumcarbonate decomposes produces carbon dioxide, makes the magnesium alloy fused mass foaming.
4, after foaming finished, the groove that will foam shifted out foaming furnace, cooled, and took out foam, and cutting is become a useful person.
Characteristics of the present invention are:
(1) the present invention adopts the direct foaming of melt mass legal system to be equipped with the foam aluminum alloy material, and technology is simple, production cost is low, is suitable for fairly large industrial production;
(2) the present invention adopts cheap magnesiumcarbonate powder as whipping agent, has reduced the production cost of foam magnesium significantly;
(3) the present invention controls the decomposition of magnesiumcarbonate by the control churning time, even foaming is carried out under suitable magnesiumcarbonate rate of decomposition, magnesiumcarbonate was disperseed more fully at magnesium liquid, the pore homogeneity of product is improved, can produce the foam magnesium products in different densities and different apertures by comparatively accurate operation again;
(4) the present invention remains in 550～650 ℃ of scopes the melt temperature that enters foamed process after the stirring, to reduce the crackle of hole wall, improves the quality of product;
(5) the present invention can pass through the granularity and the add-on of control magnesiumcarbonate powder, and suitable churning time and the whipping temp of control, to produce the foam magnesium products in different apertures;
(6) the present invention realizes the fire-retardant of magnesium alloy with calcium metal, has simplified the melting technology of magnesium alloy, has saved cost, has reduced the pollution to environment;
(7) stable process conditions of the present invention, the operation precise control, the foam magnesium products aperture of making is even, can produce different densities, the foam magnesium products in different apertures; The index of the foam magnesium products that the present invention produces is: the aperture evenly, controllable density, controllable aperture; The span of control 0.2g/cm of density
3～0.8g/cm
3The span of control 0.2mm in aperture～2mm;
(8) the present invention does tackifier at raw material fusing back adding silicon-carbide particle can increase melt viscosity.
Description of drawings
Fig. 1-Fig. 2 is the cross-section photograph of the foam magnesium material of employing the present invention preparation.
Embodiment
The present invention will be further described below in conjunction with specific embodiment:
Embodiment 1
Get alloy 1000g, consist of magnesium 93%+ aluminium 7% (mass percent), 710～730 ℃ fusing is even down in temperature, adds tackifier silicon carbide 6% (mass percent, granularity are 10～50 microns), to improve alloy melt viscosity; Naturally cooling cools to 640～660 ℃ then, melt behind the tackify is moved into stirring crucible, be cooled to 630～650 ℃, stir then, 1500 rev/mins to 2000 rev/mins of stirring velocitys, stir that promptly to add granularity in melt after the beginning be 200 orders, account for about 5% magnesiumcarbonate powder of magnalium quality, churning time is 4 minutes.With the foaming groove of melt impouring preheating, the foaming groove is pushed the foaming furnace of 630 ℃ of constant temperature after the stirring, foamed time is 4 minutes.After foaming finished, the groove that will foam took out air cooling, took out foam, and promptly getting mean pore size after cutting process is 0.3mm, and density is 0.6g/cm
3The foam magnesium products.
Embodiment 2
Difference from Example 1 is:
Get the magnesium-aluminium-calcium alloy of total amount 1000 grams, alloy proportion is magnesium 85%+ aluminium 11%+ calcium 4% (mass percent).700～730 ℃ fusing is even down in temperature, adds tackifier silicon carbide 8% (mass percent, granularity are 10～50 microns), to improve alloy melt viscosity; Naturally cooling cools to 620～640 ℃ then, melt behind the tackify is moved into stirring crucible, be cooled to 590～620 ℃, stir then, 1000 rev/mins to 1500 rev/mins of stirring velocitys, stir that promptly to add granularity in melt after the beginning be 150～200 orders, account for about 6% magnesiumcarbonate powder of magnesium-aluminium-calcium alloy quality, churning time is 5 minutes.With the foaming groove of melt impouring preheating, the foaming groove is pushed the foaming furnace of 610 ℃ of constant temperature after the stirring, foamed time is 6 minutes.After foaming finished, the groove that will foam took out air cooling, took out foam, and promptly getting the aperture after cutting process is 0.4mm, and density is 0.5g/cm
3The foam magnesium products.
Embodiment 3
Difference from Example 1 is:
Get the magnesium-aluminium-calcium alloy of total amount 1000 grams, alloy proportion is magnesium 87%+ aluminium 10%+ calcium 3% (mass percent).700～730 ℃ fusing is even down in temperature, adds tackifier silicon carbide 5% (mass percent, granularity are 10～50 microns), to improve alloy melt viscosity; Naturally cooling cools to 640～660 ℃ then, melt behind the tackify is moved into stirring crucible, be cooled to 620～640 ℃, stir then, 1000 rev/mins to 2000 rev/mins of stirring velocitys, stir that promptly to add granularity in melt after the beginning be 60～100 orders, account for about 8% magnesiumcarbonate powder of magnesium-aluminium-calcium alloy quality, churning time is 6 minutes.With the foaming groove of melt impouring preheating, the foaming groove is pushed the foaming furnace of 620 ℃ of constant temperature after the stirring, foamed time is 5 minutes.After foaming finished, the groove that will foam took out air cooling, took out foam, and promptly getting the aperture after cutting process is 1mm, and density is 0.4g/cm
3The foam magnesium products.Bubble size is more even, and physical strength is better.
According to the cross-section photograph of the foam magnesium material of the present invention preparation such as Fig. 1-shown in Figure 2.
Claims (6)
1, a kind of method of preparing foam magnesium by direct foaming of melt mass, it is characterized in that: magnesium alloy is heated under 700～730 ℃ of temperature melts, add and account for magnesium alloy quality 5～30% silicon carbide tackifier, reduce to 550～650 ℃ temperature then, add 2～20% the magnesiumcarbonate powder account for magnesium alloy and silicon carbide total mass again, and stir; With the melt impouring foaming groove after stirring, and send into foaming in the foaming furnace, blowing temperature is 550～650 ℃; After foaming finished, the groove that will foam shifted out foaming furnace, cooled, and took out foam, and cutting is become a useful person.
2, the method for preparing foam magnesium by direct foaming of melt mass according to claim 1 is characterized in that: the preferable content of described silicon carbide is 5～20%, and the preferable content of magnesiumcarbonate powder is 2～10%.
3, the method for preparing foam magnesium by direct foaming of melt mass according to claim 1 is characterized in that: granularity by control magnesiumcarbonate powder and add-on and churning time are come the aperture of control foam magnesium.
4, according to the method for claim 1 or 3 described preparing foam magnesium by direct foaming of melt mass, it is characterized in that: the granularity of described magnesiumcarbonate powder is 20～200 orders.
5, according to the method for claim 1 or 3 described preparing foam magnesium by direct foaming of melt mass, it is characterized in that: carry out high-speed stirring after adding the magnesiumcarbonate powder, stirring velocity is 1000～2000 rev/mins, and whipping temp is 550 ℃～650 ℃, and churning time is 1～10 minute.
6, the method for preparing foam magnesium by direct foaming of melt mass according to claim 1, it is characterized in that: described magnesium alloy can be magnesium-aluminium-calcium alloy, by mass percentage, with magnesium, aluminum ratio is 80-91%: 20-9% produces magnalium, add 1～5% the calcium metal account for the magnalium quality then, make the magnesium alloy of magnesium-aluminium-calcium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100477280A CN100439525C (en) | 2005-11-16 | 2005-11-16 | Process for preparing foam magnesium by direct foaming of melt mass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100477280A CN100439525C (en) | 2005-11-16 | 2005-11-16 | Process for preparing foam magnesium by direct foaming of melt mass |
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| Publication Number | Publication Date |
|---|---|
| CN1966748A true CN1966748A (en) | 2007-05-23 |
| CN100439525C CN100439525C (en) | 2008-12-03 |
Family
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|---|---|---|---|
| CNB2005100477280A Expired - Fee Related CN100439525C (en) | 2005-11-16 | 2005-11-16 | Process for preparing foam magnesium by direct foaming of melt mass |
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| CN (1) | CN100439525C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409194A (en) * | 2010-09-21 | 2012-04-11 | 中国科学院金属研究所 | Method for preparing foam magnesium alloy specially-shaped piece and composite piece by secondary foaming method |
| CN105369101A (en) * | 2015-10-17 | 2016-03-02 | 华东交通大学 | Method for preparing porous magnesium alloy |
| CN105506334A (en) * | 2015-12-16 | 2016-04-20 | 东北大学 | Preparation method for biological magnesium-based foam material |
| CN106399738A (en) * | 2016-09-14 | 2017-02-15 | 郑州峰泰纳米材料有限公司 | Melt foaming preparation method for foam magnesium |
| CN107858543A (en) * | 2017-12-07 | 2018-03-30 | 河北工业大学 | A kind of preparation method of the uniform composite foam magnesium of high tough/pore structure |
| CN108374102A (en) * | 2017-03-17 | 2018-08-07 | 黄河科技学院 | Component and preparation method thereof for making closed-cell foam composite material of magnesium alloy |
| CN112746193A (en) * | 2020-12-17 | 2021-05-04 | 北京科技大学 | Preparation method of foam magnesium or magnesium alloy |
| CN112853182A (en) * | 2020-12-30 | 2021-05-28 | 中国科学院长春应用化学研究所 | Large-size uniform and stable porous magnesium alloy material and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116426C (en) * | 2001-02-27 | 2003-07-30 | 东北大学 | Process for preparing closed pore foam aluminium by directly foaming molten body |
| JP3805694B2 (en) * | 2002-02-15 | 2006-08-02 | 本田技研工業株式会社 | Method for producing foam / porous metal |
| CN1274856C (en) * | 2003-11-14 | 2006-09-13 | 南昌航空工业学院 | Process for preparing foam magnesium |
| CN1252298C (en) * | 2004-02-26 | 2006-04-19 | 太原理工大学 | Foam composite material with magnesium base and its preparation process |
-
2005
- 2005-11-16 CN CNB2005100477280A patent/CN100439525C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409194A (en) * | 2010-09-21 | 2012-04-11 | 中国科学院金属研究所 | Method for preparing foam magnesium alloy specially-shaped piece and composite piece by secondary foaming method |
| CN105369101A (en) * | 2015-10-17 | 2016-03-02 | 华东交通大学 | Method for preparing porous magnesium alloy |
| CN105506334A (en) * | 2015-12-16 | 2016-04-20 | 东北大学 | Preparation method for biological magnesium-based foam material |
| CN106399738A (en) * | 2016-09-14 | 2017-02-15 | 郑州峰泰纳米材料有限公司 | Melt foaming preparation method for foam magnesium |
| CN108374102A (en) * | 2017-03-17 | 2018-08-07 | 黄河科技学院 | Component and preparation method thereof for making closed-cell foam composite material of magnesium alloy |
| CN107858543A (en) * | 2017-12-07 | 2018-03-30 | 河北工业大学 | A kind of preparation method of the uniform composite foam magnesium of high tough/pore structure |
| CN112746193A (en) * | 2020-12-17 | 2021-05-04 | 北京科技大学 | Preparation method of foam magnesium or magnesium alloy |
| CN112746193B (en) * | 2020-12-17 | 2022-06-17 | 北京科技大学 | Preparation method of foam magnesium or magnesium alloy |
| CN112853182A (en) * | 2020-12-30 | 2021-05-28 | 中国科学院长春应用化学研究所 | Large-size uniform and stable porous magnesium alloy material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100439525C (en) | 2008-12-03 |
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